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Chapter 1 Introduction to Computers Chapter 1 Objectives Next Recognize the importance of computer literacy Identify the types of software Define the term computer and identify its components Describe the categories of computers Explain why a computer is a powerful tool

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chapter 1 objectives
Chapter 1 Objectives

Next

Recognize the importance of computer literacy

Identify the types of software

Define the term computer and identify its components

Describe the categories of computers

Explain why a computer is a powerful tool

Determine how the elements of an information system interact

Recognize the purpose of a network

Identify the types of computer users

Discuss the uses of the Internet and the World Wide Web

Discuss various computer applications in society

Distinguish between installing and running a program

a world of computers
A World of Computers

Next

  • What is computer literacy?
  • Knowledge and understanding of computers and their uses

p. 5 Fig. 1-1

what is a computer
What Is a Computer?

Processes data into information

Data that is organized, meaningful, and useful

Acceptsdata

Raw facts, figures, and symbols

Produces and stores results

Next

  • How is a computer defined?
  • Electronic device operating under the control of instructions stored in its own memory

p. 6

what is a computer5
What Is a Computer?

Next

  • What is the information processing cycle?
  • Input
  • Process
  • Output
  • Storage
  • Communication

p. 6 Fig. 1-2

the components of a computer
The Components of a Computer

Next

  • What is an input device?
  • Hardware used

to enter data

and instructions

p. 7 Fig. 1-3

the components of a computer7
The Components of a Computer

Next

  • What is an output device?
  • Hardware that

conveys information to a user

p. 8 Fig. 1-3

the components of a computer8
The Components of a Computer

Next

  • What is the system unit?
  • Box-like case

containing

electronic

components

used to process

data

p. 8 Fig. 1-3

the components of a computer9
The Components of a Computer

Next

  • What are two main components on the motherboard?

Central Processing Unit (CPU)

Also called a processor

Carries out instructions that tell computer what to do

Memory

Temporary holding place for data and instructions

p. 8

the components of a computer10
The Components of a Computer

Next

  • What is storage?
  • Holds data, instructions, and information for future use

Storage media

  • Physical material on which data, instructions, and information are stored

Storage device

  • Records and retrieves items to and from a storage medium

p. 8

the components of a computer11
The Components of a Computer

Next

  • What isstorage media?

Digitalcameras

Portable, thin memory cards used in:

Handheldcomputers

p. 8

the components of a computer12
The Components of a Computer

Next

  • What is a floppy disk?
  • Thin, circular, flexible disk enclosed in rigid plastic shell

p. 8 Fig. 1-4

the components of a computer13
The Components of a Computer

Next

  • What is a flash drive?
  • Provides much greater storage capacity than a floppy disk or Zip® disk
  • Small and lightweight enough to be transported on a keychain or in a pocket

p. 9 Fig. 1-5

the components of a computer14
The Components of a Computer

Next

  • What is a hard disk?
  • Provides much greater storage capacity than a floppy disk or USB flash drive
  • Housed inside the system unit

p. 9 Fig. 1-6

the components of a computer15
The Components of a Computer

Next

  • What is a compact disc?
  • Flat, round, portable metal disc
  • CD-ROM
  • CD-RW
  • DVD-ROM
  • DVD+RW

p. 9 Fig. 1-7

why is a computer so powerful
Why Is a Computer So Powerful?

ReliabilityandConsistency

Storage

Speed

Accuracy

Communications

Next

  • What makes a computer powerful?

p. 10

networks and the internet
Networks and the Internet

Satellites

Cables

Enables a connection between computers

Telephone lines

Cellular radio

One type is a modem

Next

  • What is a network?
  • Collection of computers and devices connected together

Communications Device

Communications Media

p. 10

networks and the internet18
Networks and the Internet

Next

  • What are the reasons to network?

To share

Resources

Hardware devices

Software programs

To save time and money

Data

Information

p. 10

networks and the internet19
Networks and the Internet

Next

  • What is a server?
  • Manages the resources on a network
  • A client accesses the resources on the server

p. 10 Fig. 1-8

networks and the internet20
Networks and the Internet

Next

  • What is the Internet?
  • Worldwide collection of networks that connects millions of computers

p. 11 Fig. 1-9

networks and the internet21
Networks and the Internet

Next

  • Why do users access the Internet?
  • Communications
  • Information
  • Shopping
  • Banking and Investing
  • Classes
  • Entertainment

p. 12 Fig. 1-10

networks and the internet22
Networks and the Internet

Next

  • What is the Web?
  • Billions of documents, called Web pages, available to anyone connected to the Internet

A Web site is a collection of related Web pages

A Web page contains text, graphics, sound, video, and links to other Web pages

You can share information by creating Web pages or posting photos on a photo community

p. 13

computer software
Computer Software

Next

  • How do you install a software program?
  • A program is a series of instructions that tells the computer what to do

p. 14 Fig. 1-13

computer software24
Computer Software

Next

  • What is a graphical user interface (GUI)?
  • Allows you to interact with the software using graphics and icons
  • Controls how you enter data and how the screen displays information

p. 14 Fig. 1-14

computer software25
Computer Software

Next

  • What issystem software?
  • Programs that control the operations of the computer and its devices

Operating System (OS)is a set of programs that coordinates all activities among computer hardware devices and allows users to run application software

Utility Programsallow the user to perform maintenance-type tasks usually related to managing a computer, its devices or its programs

p. 15

computer software26
Computer Software

Next

  • What isapplication software?
  • Programs that perform specific tasks for users

Word Processing

Spreadsheet

Database

Presentation Graphics

p. 16 Fig. 1-15

computer software27
Computer Software

Javascript program

Resulting Internet application

Next

  • What is aprogrammer?
  • Someone who developsapplication or system software
  • Programmer writesinstructions todirect computer toprocess data intoinformation

p. 17 Fig. 1-16

categories of computers
Categories of Computers

Midrange servers

Supercomputers

Mainframe computers

Personal computers (desktop)

Mobile computersand mobile devices

Next

What are the categories of computers?

p. 18

personal computers
Personal Computers
  • PC and compatibles use the Windows operating system
  • Apple Macintosh uses the Macintosh operating system (Mac OS)

Next

  • What are the two most popular series of personal computers?

p. 19 Figs. 1-18–1-19

personal computers30
Personal Computers

Next

  • What is adesktop computer?
  • Designed so all of the components fit on or under a desk or table

p. 19 Fig. 1-18

personal computers31
Personal Computers

Next

  • What is anotebook computer?
  • Portable, small enough to fit on your lap
  • Also called a laptop computer
  • Generally more expensive than a desktop computer

p. 20 Fig. 1-20

handheld computers
Handheld Computers

Next

  • What is atablet PC?
  • Resembles a letter-sized slate
  • Allows you to write on the screen using a digital pen
  • Especially useful for taking notes

p. 20 Fig. 1-21

handheld computers33
Handheld Computers

Next

  • What are Web-enabled handheld computers?
  • Allow you to check e-mail and access the Internet
  • Web-enabled telephone is a “smart phone”

p. 21 Fig. 1-23

handheld computers34
Handheld Computers

Small enough to fit in your hand

Used by mobile employees such as meter readers and delivery people

Next

  • What is ahandheld computer?

p. 21

handheld computers35
Handheld Computers

Next

  • What is apersonal digital assistant (PDA)?
  • Provides personal organizer functions
    • Calendar
    • Appointment book
    • Address book
    • Calculator
    • Notepad

p. 21 Fig. 1-23

servers
Servers

Next

  • What types of servers are there?

Midrange serverPowerful, large computer that supports up to a few thousand computers

MainframeVery powerful, expensive computer that supports thousands of computers

SupercomputerThe fastest, most powerful, most expensive computer. Used for applications requiring complex mathematical calculations

p. 22 and 23 Figs. 1-25–1-27

elements of an information system
Elements of an Information System

Next

  • What are information system elements?
  • People
  • Procedures
  • Data
  • Software
  • Hardware

p. 24 Fig. 1-28

what are five categories of computer users
What are five categories of computer users?

Next

  • Home
  • Small Office/Home
  • Mobile
  • Large Business
  • Power

p. 25 Fig. 1-29

examples of computer usage
Examples of Computer Usage

Next

  • What software is available for a small office/home office (SOHO) user?
  • Local area network (LAN)
  • Productivity software
  • Specialty software
  • Web usage
  • E-mail

p. 28 Fig. 1-33

examples of computer usage40
Examples of Computer Usage

Next

  • What is available for a mobile user?
  • Hardware
  • Software
    • Productivity
    • Presentation
    • Personal information manager

p. 29 Fig. 1-35

examples of computer usage41
Examples of Computer Usage

Next

  • What are the needs of the large business user?

Public kiosk

Web access

Telecommuting

Network

Productivity software

Scheduling

p. 30 Figs. 1-37–1-40

examples of computer usage42
Examples of Computer Usage

Next

  • What are the needs of a power user?
    • Speed and large amounts of storage
  • Types of power users
  • Engineers
  • Architects
  • Desktop publishers
  • Graphic artists

p. 32 Fig. 1-41

computer applications in society
Computer Applications in Society

Next

  • What are some examples of computer applications in society?
  • Education
  • Finance
  • Government
  • Healthcare
  • Science
  • Publishing
  • Travel
  • Industry

p. 33 Figs. 1-42–1-49

summary of introduction to computers
Summary of Introduction to Computers

The importance of computer literacy

Types of software

The computer and its components

Categories of computers

Why is a computer so powerful?

Elements of an information system

What is a network?

Types of computer users

The Internet and the World Wide Web

Computer applications in society

Installing and running a program

Chapter 1 CompleteBack to Presentations